arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.07125eess.SPcs.NIcs.PF
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mmWave光线跟踪的精度与复杂度:全栈视角

Accuracy vs. Complexity for mmWave Ray-Tracing: A Full Stack Perspective

Mattia Lecci, Paolo Testolina, Michele Polese, Marco Giordani, Michele Zorzi

摘要:

毫米波(mmWave)频带将在未来无线系统的无线电接入中提供每秒数千兆比特的连接。频谱的这一部分中的高传播损耗要求部署大型天线阵列以通过高定向增益来补偿损耗,从而在信道模型中引入空间维度以准确地表示毫米波网络的性能。从这个角度来看,射线跟踪可以根据多路径分量(MPC)来表征信道,以提供高度准确的模型,代价是极端的计算复杂性(例如,用于处理关于传播的详细环境信息),这限制了仿真的可缩放性。在本文中,我们提出了可能的简化,以提高在毫米波射线跟踪模拟的准确性和复杂性之间的权衡,通过减少MPC的总数。通过端到端仿真,测试不同的配置参数,传播场景和更高层的协议实现,从全栈的角度来评估这种简化的效果。然后,我们提供的最佳程度的简化,这是可能的,以减少模拟的复杂性与最小的减少不同的部署方案的准确性的指导方针。

英文摘要:

The millimeter wave (mmWave) band will provide multi-gigabits-per-second connectivity in the radio access of future wireless systems. The high propagation loss in this portion of the spectrum calls for the deployment of large antenna arrays to compensate for the loss through high directional gain, thus introducing a spatial dimension in the channel model to accurately represent the performance of a mmWave network. In this perspective, ray-tracing can characterize the channel in terms of Multi Path Components (MPCs) to provide a highly accurate model, at the price of extreme computational complexity (e.g., for processing detailed environment information about the propagation), which limits the scalability of the simulations. In this paper, we present possible simplifications to improve the trade-off between accuracy and complexity in ray-tracing simulations at mmWaves by reducing the total number of MPCs. The effect of such simplifications is evaluated from a full-stack perspective through end-to-end simulations, testing different configuration parameters, propagation scenarios, and higher-layer protocol implementations. We then provide guidelines on the optimal degree of simplification, for which it is possible to reduce the complexity of simulations with a minimal reduction in accuracy for different deployment scenarios.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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